Spectrally selective glazing: More daylight, less heat gain

New developments in spectrally selective low-e glazing offer unprecedented levels of daylight with minimal solar heat gain. St.

Thomas More Hospital in Canon City, Colo., is

among a handful of projects in the U.S. that

feature the latest in spectrally selective low-e

glazing: triple-silver-coated glass. The glass

blocks up to 73% of heat-generating infrared

light, while allowing 64% of visible light to pass

through. Photo: PPG 

        

The nanomaterials revolution has brought many innovations to the building sector in recent years—concrete that cleans itself, glass that switches from transparent to opaque with the push of a button, and solar panels as thin as paper.Read more.

One of the more notable nanomaterial successes in the building industry dates back to the late 1970s. That’s when scientists discovered that by applying nanometer-thick films—for the record, a nanometer is a billionth of a meter—of metal and metal oxide to glass, they could block high levels of heat-generating infrared light, while allowing most visible light to pass through. The discovery led to the development of thin-film-coated spectrally selective low-e glasses that offered Building Teams a near-crystal-clear glazing alternative to traditional multi-pane insulating glass units that use tinted or mirrored glass to control solar heat gain.

Over the years, glass coating manufacturers refined the coating process, eventually adding a second layer and—quite recently—a third layer of metal to reflect a much larger percentage of UV and infrared light while still maintaining a high level of visible light transmittance.

 

 

600450 Spectrally selective glazing: More daylight, less heat gain glassonweb.com
Date: 19 February 2009
Source: Bdcnetwork

See more news about:

See more from these topics:

Others also read

New STEM education facility at Carnegie Science Center targeted to open in 2018.
PPG has designed and produced windows for the Breakthrough Laminar Aircraft Demonstrator in Europe (BLADE), a Clean Sky Smart Fixed Wing Aircraft Integrated Technology Demonstrator (SFWA ITD).
PPG reaches agreement with Nippon Electric Glass for sale of remaining fiberglass operations.
PPG and Vision Systems have reached a commercial agreement to work together on developing new applications utilizing Vision Systems’ electronically dimmable window shading solutions for aircraft.
Annual conference for decorated glass and ceramics set for Pittsburgh, April 22-24.
$55 million investment to enable production of jumbo-sized energy-efficient glass

Add new comment